<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>超链接去掉下划线</title>
  <style type="text/css">
    /*使用decoration修饰*/
    a{
      text-decoration: none;
    }
  </style>
</head>
<body>
<a href="http://www.baidu.com" target="_blank">点击到百度</a>
</body>
</html>